Google parent Alphabet Inc , Microsoft Corp and Amazon.com Inc made headway in the latest quarter in the areas that will be their main engines of growth for years to come, driving up shares across the tech sector on Friday. For Alphabet, search traffic on mobiles surpassed desktop traffic worldwide for the first time, while Amazon was able to boost margins, an area of concern, as its cloud business boomed. Microsoft's growing emphasis on cloud computing under Chief Executive Satya Nadella also put the company on track successfully transition away from its slowing business that relies on sales of personal computers.
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Alphabet, Microsoft, Amazon give Wall Street reason to cheer